.fl {
  float: left;
}

.fr {
  float: right;
}

.clearfix {
  clear: both;
}

i {
  font-weight: normal;
}

.clear::after {
  visibility: hidden;
  display: block;
  font-size: 0;
  content: ".";
  clear: both;
  height: 0;
}

div {
  margin: 0;
  padding: 0;
}

body,
input,
button,
select,
textarea,
table {
  font: 12px '微软雅黑', '宋体';
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

a {
  color: #474747;
  text-decoration: none;
}

a:hover {
  color: #ff8400;
}

.plus img {
  transition: all 1s ease;
}

.plus img:hover {
  transform: scale(1.2);
}

.footer {
  width: 100%;
  margin: 0;
  padding: 0;
  background-color: #dcdcdc;
  padding: 31px 0 0;
  font: 14px '微软雅黑', '宋体';
  position: relative;
}

/* 联系我们 */
.footer .connect {
  width: 1200px;
  margin: 0 auto;
  height: 261px;
  /* background-color: pink; */
}

/* 底部小卡片盒子的公共样式 */
.footer .connect-div {
  display: block;
  width: 186px;
  height: 233px;
  background-color: #d2d2d2;
  float: left;
  margin-right: 28px;
  overflow: hidden;
}

.footer .connect-div .icon {
  display: block;
  width: 88px;
  height: 88px;
  background: url(../images/icon.png) no-repeat 0 0;
  margin: 24px auto 15px;
}

/* 清除最后一个盒子的外边距 */
.footer .con-4 {
  margin-right: 0;
}

.footer .con-2 .icon {
  background-position: 0 -88px;
}

.footer .con-3 .icon {
  background-position: 0 -176px;
}

.footer .con-4 .icon {
  background-position: 0 -264px;
}

.footer .connect-div span {
  display: block;
  line-height: 32px;
  font-size: 16px;
  color: #474747;
}

.footer .connect-div p {
  text-align: center;
}

.footer .connect-div p a {
  display: block;
  font-size: 14px;
  line-height: 24px;
  color: #707070;
  /* vertical-align: middle; */
  margin: 0 auto;
}

.footer .connect-div p a:hover {
  color: #ff8400;
}

.footer .connect .code {
  width: 356px;
  height: 233px;
  overflow: hidden;
  text-align: center;
  font-size: 16px;
  color: #474747;
  line-height: 32px;
  float: right;
}

.footer .code .v2code {
  width: 100%;
  height: 168px;
  background: url(../images/line.png) no-repeat center bottom;
  line-height: 44px;
}

.footer .code .v2code img {
  display: block;
  width: 90px;
  height: 90px;
  margin: 0 auto;
  transform: none;
}

/* 底部版权 */
.footer .copyright {
  width: 100%;
  margin: 0;
  padding: 0;
  background: #c9c9c9;
  padding: 33px 0 36px;
}

.footer p,
a {
  color: #707070;
  text-align: center;
  margin: 0;
  padding: 0;
  /* line-height: 16px; */
}

.copyright p a {
  line-height: 16px;
}

.back-top {
  position: fixed;
  right: 15px;
  bottom: 10px;
  opacity: 1;
}

.back-top a {
  display: block;
  width: 60px;
  height: 50px;
  margin-bottom: 10px;
  border-radius: 2px;
  background: url(../images/back-top.png) center center no-repeat;
  background-color: rgba(0, 0, 0, .2);
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .2);
}
.back-top a:hover{
  background-color: #444;
}